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  <title>显示随机数最大的可能值</title>
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  <div id="layout-content"><div id="function.getrandmax" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">getrandmax</h1>
  <p class="verinfo">(PHP 4, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">getrandmax</span> &mdash; <span class="dc-title">显示随机数最大的可能值</span></p>

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 <div class="refsect1 description" id="refsect1-function.getrandmax-description">
  <h3 class="title">说明</h3>
   <div class="methodsynopsis dc-description">
    <span class="methodname"><strong>getrandmax</strong></span>(): <span class="type">int</span></div>

  <p class="simpara">
   返回调用 <span class="function"><a href="function.rand.html" class="function">rand()</a></span> 可能返回的最大值。
  </p>
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 <div class="refsect1 parameters" id="refsect1-function.getrandmax-parameters">
  <h3 class="title">参数</h3>
  <p class="para">此函数没有参数。</p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.getrandmax-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   <span class="function"><a href="function.rand.html" class="function">rand()</a></span> 返回随机数可能返回的最大值
  </p>
 </div>

 <div class="refsect1 seealso" id="refsect1-function.getrandmax-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.rand.html" class="function" rel="rdfs-seeAlso">rand()</a> - 产生一个随机整数</span></li>
    <li class="member"><span class="function"><a href="function.srand.html" class="function" rel="rdfs-seeAlso">srand()</a> - 播下随机数发生器种子</span></li>
    <li class="member"><span class="function"><a href="function.mt-getrandmax.html" class="function" rel="rdfs-seeAlso">mt_getrandmax()</a> - 显示随机数的最大可能值</span></li>
   </ul>
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